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report metrics on number of cache evictions

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This commit is contained in:
Richard van der Hoff 2018-02-01 17:57:51 +00:00
parent 77c0629ebc
commit bc496df192
5 changed files with 56 additions and 5 deletions
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6
synapse/util/caches/expiringcache.py
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@ -79,7 +79,11 @@ class ExpiringCache(object):
while self._max_len and len(self) > self._max_len:
_key, value = self._cache.popitem(last=False)
if self.iterable:
self._size_estimate -= len(value.value)
removed_len = len(value.value)
self.metrics.inc_evictions(removed_len)
self._size_estimate -= removed_len
else:
self.metrics.inc_evictions()
def __getitem__(self, key):
try: